Pipe-vise.



S.-M. KASS. PIPE VISE.

APPLICATION FILED NOV. 23.1915.

Patented June 27, 1916.

' ject in firm contact with the jaws, and theresafe A rr'io.

SAMUEL M. KASS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF TWO-FIFTHS '10 HARRY E. LA'IHADI.

PIPE-VISE.

Improvement in Pipe-Vises, of which the followmg description, 1n connection with the accompanying drawings, is a specification, like letters on the drawings representmg like parts.

This invention relates to vises for holding pipes or other ob ects of simllar nature or of a cylindrical form.

One of the principal objects of the invention consists in the peculiar disposition of the teeth or indentations of the jaws of the vise, whereby both the jaws act to give a maximum of resistance to prevent turning movement of the pipe or other object in the vise. This peculiar feature is of special importance since it permits of a minimum of pressure being exerted to hold the ohby prevents undue crushing strains upon the object and permits simple means for easy and quick adjustment of objects in the vise.

Another important feature is the means employed. to permit different sets of teeth to be used, thereby enabling the use of teeth particularly adapted to objects of a particular kind or class.

A still further important feature consists in the novel and easy method of using a chain or other flexible member to give sufiicient holding power against the jaws and to enable quick adjustment and easy removal of the object.

Other important features of the invention will hereinafter be described with particular reference to the accompanying drawings wherein one good form of means is shown for carrying the various features of the present invention. into effect, it being understood. that the invention in its true scope is defined by the appended claims.

In the drawings :-Figure 1 is a perspective view of the vise in elevation, showing an object held in operative position by the jaws; Fig. 2 is a partial view in elevation of the vise jaws, showing means for substituting different sets of teeth therein; and Figs. 3 and 4 are elevation and plan views respectively of a means for retaining one end of the flexible member to hold the Specification of Letters Patent.

Application filed November 23, 1915.

object in firm relation to the jaws of the vise.

The body of the rise may be of any suit able shape and is preferably of a form such as 1, giving easy and firm attachment to a supporting means such as the top of a table or work bench 2, by suitable attaching means such as the screws or bolts 3 which latter may be disposed as deemed advisable.

The vise may be made of any suitable material, but for purposes of ease and cheapness of construction, it is preferably cast of iron.

The holding part of the vise consists of jaws formed by two members or arms such as 4, 4P. These arms are inclined to one another so as to form a V-shaped aperture between them. The arms 41;, 4* are inclined to one another at an angle preferably slightly greater than forty five degrees, but the in clination of these arms is not restricted thereto, but may be either greater or less than this inclination. The arms l, 48 are provided each with a serrated or notched surface such as 5, 5 forming teeth to engage upon the periphery of the object held between them, and to hold the object in firm relation thereto and prevent it turning.

It will be noted that these notched or serrated surfaces form teeth the direction of whose general. trend on one arm is downward, and the direction of whose general trend on the other arm is upward. It will also be noted that a tooth instead of being formed with equal convergent faces. has one face of greater width than the other face. Thus, Fig. 1, the face 6 of a tooth is of greaterwidth than the face 7. This peculiar formation of a tooth, coupled with the fact that the set of teeth on one jaw trend in a general direction opposite the direction from the set of teeth on the other jaw, obviously gives the teeth greater holding power against turning movement of the object 8 than would be possible by the ordinary construction. It will. also be apparent that the relative difference in width between the two intersecting surfacesof a tooth may be varied for different kinds of objects with good results. Thus the relative widths of the faces 6 and 7, Fig. l, of a tooth may be more nearly equal to each other than shown, or they may be so formed as to have a still greater difi'erence in. width, and therefore within the true scope of this invention, a

tooth need not be restricted to the particular shape or size illustrated so long as the maintained.

, chain of the character illustrated.

In order that the teeth may be removed for any purpose and new teeth substituted, if desired, and in order that the teeth them selves may be made of a material best suited to their purpose, the arms 4 and 4. Fig. 2, are recessed as at 9 and 9 to receive interchangeable toothed portions such as 10, 10*. These toothed portions may be held to the arms by any suitable means, one good form of such lneans being shown by the bolt 11 and the nut 12, Fig. 2, the head of the bolt being countersunk in the face of the toothed portion 1O and the end of the bolt being engaged by the nut resting within the slotted portion 13 of the arm P. A chain or other flexible member such as 14, Fig. 1, engages a member such as 15 which passes through a projection or lug on the vise slightly to one side of the bottom of the aw opening, such as 16. The member 15 is threaded at its end 17 and is provided with adjusting means, preferably a nut and washer such as the wing nut 18 and washer 19.

A holding piece such as 20 is provided on the body of the vise on the other side of the jaws, and substantially diagonally opposed to the lug 16. The holding piece 20 has formed in its outer face a recess extending in a more or less diagonal direction to the plane of the outer face of the vise, such as 21, of suitable. shape to engage and hold a link of the chain or member 14. To better enable the holding piece 20 to perform its function, it may be desirable to partially recess the body of the vise beneath the piece 20, as at 22, Fig. 1,'thereby giving the link ample opportunity to engage and be held by the piece 20. The piece 20 may be formed integral with the body of the vise, or it may be made separate and held in position by suitable means such as the bolt 23,

Figs. 3 and 1.

It will be noted that the recess 21, Figs. 3 and 4, is of general double-wedge formation, which is especially adapted to hold a Where different shaped links are used, it is obvious that a different shaped recess will be desirable, and hence the recess is not restricted to the shape illustrated, but may bemade in other shapes.

From the foregoing, it will be clearly seen that when a pipe or other object is placed in the V-shaped jaws and the chain or memher is passed over it substantially as indicated in Fig. l, and the free end is engaged in the recess 21 ofthe piece 20, the chain or member let being in the latter operation drawn over the pipe or object with the least possible slack or looseness thereof, a Very small adjustment of the wing nut 19 screwed up on the threaded portion 17 of the piece 15 will be sufficient to securely hold the object in firm relation to the jaws so that it will not turn when operated upon, owing to the peculiar biting effect of the jaw teeth. Also, it will be noted that quick removal may be effected by slacking. up the nut 18 sutliciently tov disengage the member 14 where it is caught and held by the recess 21 1 of the piece 20.

lVhat is claimed is 1. In a pipe vise, the combination of a plate having rigid V-shaped jaws provided with teeth upon the biting surfaces thereof, a clamping chain passing diagonally from the front of the plate over the object to be clamped and betweensaid jaws to the rear of the plate, means to adjustably secure one end of the chain at a point on one side of the plate, and a claw to detachably engage and hold the body of a link of the chain at the opposite side of the plate.

2. In a pipe vise, the combination of a body including a bench plate, said body having rigid arms forming a jaw'with V- shaped opening, serrations or teeth on the biting faces of the jaws, and a flexible clamp passing diagonally between the jaws for holding a pipe upon the teeth of the jaws,

said clamp being secured to one face of the jaws, and means for detachably securing the clamp at the opposite face of the jaws.

3. In a pipe wrench, the combination of a bench plate having arms forming a" V- shaped jaw, a lug at one side of the jaw face, a chain secured to said lug and adapted to pass diagonally over and hold a pipe in said jaw, and means at the opposite face of the jaw for detachably engaging and holding the body of a link of the free portion of the chain after it has been passed diagonally over the pipe and between the jaw arms.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

R. R. BAU'MAN, L. M. HUDNUT.

Copies at this patent may bl obtained for five cents each, by addressing the "Commissionerof Patents. Wuhlngton, D. 0." 

